docs: Phase 8 documentation - Gitea, Obsidian, Outline, Vikunja, map (AUD-74)

- README: architecture Mermaid, Phase 8 status, Phase 7 endpoints, Documentation index
- docs/outline/: AI-context collection (index, system, config, code map, runbook)
- docs/email-agent-architecture.mmd + rendered PNG + Archify map (showcase pass)
- docs/vikunja-tasks.json (Vikunja project 17, tasks 179-185)
- docs/phase8-documentation.md evidence

docs/vikunja-tasks.json

@@ -0,0 +1,15 @@
+{
+  "project": "Email Agent",
+  "vikunja_project_id": 17,
+  "url": "https://vikunja.lab.audasmedia.com.au",
+  "description": "Human task overview for the Email Agent. High-level milestones; the engineering detail lives in the Gitea repo and the Outline collection.",
+  "tasks": [
+    { "id": 179, "title": "Build and deploy Email Agent phases 1-7 (Go, HTMX, SQLite, IMAP, JEV, triage, replies, unsubscribe, summary, Hub)", "done": true },
+    { "id": 180, "title": "Deploy on .13 behind Caddy at mail.lab.audasmedia.com.au", "done": true },
+    { "id": 181, "title": "Gitea sam/email_agent: README, Mermaid diagram, Archify map, publish maps", "done": true },
+    { "id": 182, "title": "Outline collection Email Agent with AI context docs", "done": true },
+    { "id": 183, "title": "Obsidian note for Email Agent in 010 inbox", "done": true },
+    { "id": 184, "title": "1-month message-body retention and actions_log cap (AUD-75)", "done": true },
+    { "id": 185, "title": "Confirm the Gmail send-as identity at Phase 5 (FR-15)", "done": true }
+  ]
+}